SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('de1f4a6f6726fc785528e9fe90ec15be','0','3.144.150.107','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715892575','board.php?boardid=244&sid=a7ddb8a78e21306a8afebf56c99fc17e','0','0','')
mysql error: Duplicate entry 'de1f4a6f6726fc785528e9fe90ec15be' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 22:49
Script: /board.php?boardid=244&sid=a7ddb8a78e21306a8afebf56c99fc17e
Referer: http://wehrbauten.de/board.php?boardid=244&sid=a7ddb8a78e21306a8afebf56c99fc17e